Pimento Is Back and Weird as Ever is the cold open from the Season Four episode, Monster in the Closet.
Synopsis
Charles Boyle goes to comfort his upset son, Nikolaj, who is in bed and upset about something big and hairy in his closet. When Boyle goes to open the closet to prove to his son there's nothing there, the big and hairy Adrian Pimento is standing there to greet him.